22452431 has 2 divisors, whose sum is σ = 22452432. Its totient is φ = 22452430.

The previous prime is 22452421. The next prime is 22452449. The reversal of 22452431 is 13425422.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22452431 is a prime.

It is a super-2 number, since 2×22452431² = 1008223315619522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22452397 and 22452406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22452421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11226215 + 11226216.

It is an arithmetic number, because the mean of its divisors is an integer number (11226216).

Almost surely, 2^22452431 is an apocalyptic number.

22452431 is a deficient number, since it is larger than the sum of its proper divisors (1).

22452431 is an equidigital number, since it uses as much as digits as its factorization.

22452431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 23.

The square root of 22452431 is about 4738.3996243458. The cubic root of 22452431 is about 282.1117165469. Note that the first 3 decimals are identical.

Adding to 22452431 its reverse (13425422), we get a palindrome (35877853).

The spelling of 22452431 in words is "twenty-two million, four hundred fifty-two thousand, four hundred thirty-one".